Year	current US$
1960	74000000
1961	86000000
1962	95000000
1963	102000000
1964	95000000
1965	97000000
1966	109000000
1967	113000000
1968	115000000
1969	126000000
1970	136000000
1971	151000000
1972	147000000
1973	136000000
1974	270000000
1975	365000000
1976	279000000
1977	259000000
1978	296000000
1979	293000000
1980	396000000
1981	352000000
1982	256000000
1983	189000000
1984	210000000
1985	206000000
1986	214000000
1987	242000000
1988	230000000
1989	227000000
1990	257000000
1991	248000000
1992	292000000
1993	414000000
1994	456000000
1995	455000000
1996	546000000
1997	596000000
1998	484000000
1999	523000000
2000	498000000
2001	478000000
2002	487000000
2003	513000000
2004	593000000
2005	553000000
2006	588000000
2007	679000000
2008	795000000
2009	763000000
2010	880000000
2011	1129000000
2012	1416000000
2013	1375000000
2014	1167000000
2015	1151000000
2016	1441000000
2017	1437000000
2018	1339000000
2019	1567000000
2020	2590000000
2021	4356000000
2022	11299000000
2023	13059000000